It's a bit off topic but I don't agree with this. It's quite clear what is fake and real to an experienced authenticator. Certainty is not the issue. The sad thing is that the manufacturers can't tell because they don't follow it and don't have the time or knowledge to train staff to spot fakes. And so it's known that fakes will pass inspection. It's only as good as the weakest link in the chain. I am very disappointed at the state of affairs at these venerable companies in this regard.
So by this theory, it's the design houses themselves that are the problem, not professional, fully qualified, top notch authenticators.
I disagree with most of your theories because when working of only photographs, an authenticator does not have the ability to touch the item, nor smell the item. Two senses that can also make or break authenticating an item accurately. If your service has the ability to put the item right into your hands, then great. Most of us don't have that option, hence the inexact nature of authentication.